The testosterone replacement hormone is called Testosterone Cypionate, also called TCE, for short. It is a synthetic compound created to mimic the natural male hormone, testosterone, as much as possible. TCE is made in a lab at the National Institute on Drug Abuse. A person who has a condition called hyperandrogenism (high testosterone) cannot make testosterone naturally. These people typically use a drug like testosterone or take a supplement or oral medication that increases their level. When a person's testosterone level goes up, it can make them feel weak, lethargic, and not as active as usual. As a result, people with hyperandrogenism often have problems keeping themselves in good health. If you take a testosterone supplement, you might find that your muscle strength, energy, stamina, and libido go down or go up. TCE is not a magic pill that can change how you feel, but is an effective treatment for men with low testosterone. I hope this gives you an idea of what TCE is, what it does, and how it works. TCE (Testosterone, Cysteine, Folic Acid) is an ingredient in a variety of products, including supplements. It is a natural supplement available by prescription. If you have a low level of testosterone, TCE can help you maintain your health by giving you back your natural testosterone.